Human activities influence the occupancy probability of mammalian carnivores in the Brazilian Caatinga

Dias, Douglas de Matos; Massara, Rodrigo Lima; Campos, Cláudia Bueno de; Rodrigues, Flávio Henrique Guimarães

doi:10.1111/btp.12628

Cited by 46 publications

(42 citation statements)

References 50 publications

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“…Second, robustly assessing poaching represents a difficult undertaking because illegal hunting is such a cryptic phenomenon. Although some studies have used presence or absence of people from camera-trapping data to represent direct measures of hunting pressure (Dias et al, 2019), such measures are not applicable in our landscape, because some local communities are allowed to legally enter the study sites to collect non-timber forest products. Further complicating the situation is the fact that these local people may engage in both legal non-timber forest product collection and illegal hunting in order to maximize potential profit.…”

Section: Methodsmentioning

confidence: 99%

Identifying conservation priorities in a defaunated tropical biodiversity hotspot

Tilker

Abrams

Nguyen

et al. 2019

Preprint

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Aim: Unsustainable hunting is leading to widespread defaunation across the tropics. To 21 mitigate against this threat with limited conservation resources, stakeholders must 22 make decisions on where to focus anti-poaching activities. Identifying priority areas in a 23 robust way allows decision-makers to target areas of conservation importance, 24 therefore maximizing the impact of conservation interventions. 25 Location: Annamite mountains, Vietnam and Laos.26 2 Methods: We conducted systematic landscape-scale surveys across five study sites (four 27 protected areas, one unprotected area) using camera-trapping and leech-derived 28 environmental DNA. We analyzed detections within a Bayesian multi-species occupancy 29 framework to evaluate species responses to environmental and anthropogenic 30 influences. Species responses were then used to predict occurrence to unsampled 31 regions. We used predicted species richness maps and occurrence of endemic species to 32 identify areas of conservation importance for targeted conservation interventions.33 Results: Analyses showed that habitat-based covariates were uninformative. Our final 34 model therefore incorporated three anthropogenic covariates as well as elevation, which 35 reflects both ecological and anthropogenic factors. Conservation-priority species tended 36to found in areas that are more remote now or have been less accessible in the past, and 37 at higher elevations. Predicted species richness was low and broadly similar across the 38 sites, but slightly higher in the more remote site. Occupancy of the three endemic species 39 showed a similar trend. 40Main conclusion: Identifying spatial patterns of biodiversity in heavily-defaunated 41 landscapes may require novel methodological and analytical approaches. Our results 42 indicate to build robust prediction maps it is beneficial to sample over large spatial 43 scales, use multiple detection methods to increase detections for rare species, include 44 anthropogenic covariates that capture different aspects of hunting pressure, and analyze 45 data within a Bayesian multi-species framework. Our models further suggest that more 46 remote areas should be prioritized for anti-poaching efforts to prevent the loss of rare 47 and endemic species. 48

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Section: Methodsmentioning

confidence: 99%

Identifying conservation priorities in a defaunated tropical biodiversity hotspot

Tilker

Abrams

Nguyen

et al. 2019

Preprint

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“…KEYWORDS: conservation, human dimensions, jaguar, puma, semiarid A partir do resgate de algumas ações de órgãos públicos, academia e organizações do terceiro setor em unidades de conservação e fora delas, é possível ter uma aproximação à atenção que tem sido dispensada à pesquisa e conservação na Caatinga, com foco nos mamíferos carnívoros. Alguns trabalhos têm sido conduzidos para algumas espécies deste grupo (OLMOS, 1993;SILVEIRA et al, 2010;DIAS;BOCCHIGLIERI 2016aBOCCHIGLIERI , 2016bPENIDO et al, 2016;DIAS et al, 2019), porém, limitados a um ou poucos aspectos de sua ecologia.…”

Section: Conclusõesunclassified

“…Essas interações têm acontecido como se os recursos naturais fossem inesgotáveis, tornando-se alvo de sobre-exploração em um contexto de fraca governança (BRAGAGNOLO et al, 2017 (CROOKS, 2002). Na Caatinga, além da pressão antrópica, os mamíferos também enfrentam escassez de água e temperaturas elevadas (DIAS et al, 2019).…”

Section: Conclusõesunclassified

ESTRESSE SALINO NO CRESCIMENTO INICIAL E METABOLISMO DE NITROGÊNIO EM PLANTAS DE ARROZ (Oryza sativa L.)

Pereira¹,

Dias²,

Silva³

et al. 2019

Desenvolvimento Sustentável Do Semiárido Brasileiro

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Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição 4.0 Internacional (CC BY 4.0).O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.

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“…Existing research efforts characterizing the impacts of human activities on the eco-environment have mainly focused on the following aspects: land surface [19,20], landscape structure [21][22][23][24][25][26], biodiversity [27][28][29][30], and ES [1,31,32]. Despite research efforts related to ES having increasingly shifted to the detection of the relationships between humans and ES in the context of sustainable development, there is scant research in spatial heterogeneity [31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Ecosystem Service Response to Human Disturbance in the Yangtze River Economic Belt: A Case of Western Hunan, China

Chen

et al. 2020

Sustainability

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Ecosystem conservation is one of the core elements of sustainable development. Studying the relationship between human disturbance and the ecosystem service value (ESV) change is an urgent need for the future. The Yangtze River Economic Belt is one of the key economic strategies implemented by the Chinese government and is also a demonstration zone for ecological conservation. Western Hunan is an important ecological barrier in the Yangtze basin where different ethnic groups live together and various cultures coexist. In this study, using land-use data and spatial analysis modeling, the changes in the ecosystem service value at five topographic gradients were evaluated. Human disturbance and its spatial correlation with the ecosystem service value from 1990 to 2015 were also investigated. The results demonstrated the following: (1) the proportional area of forestland and grassland increased as the topographic gradient index increased and other types of land-use gradually decreased; (2) The ecosystem service value at middle gradients increased over the study period; but ESV of the lowest topographic gradient showed a significant decline and a substantial decrease, as well as a terrain index under 0.7970; (3) The spatial analysis of human disturbance showed that more than 90% of intense human disturbance was distributed in the area of the lowest topographic gradient where topographic features were low-altitude and low-slope, and little human disturbance was scattered at other gradients; (4) There was a significant spatial aggregation distribution between the ecosystem service value and human disturbance in western Hunan, the high disturbance and low ESV aggregation was mainly distributed in Loudi City, the area east of Shaoyang City and Zhangjiajie City all belonged to the lowest topographic gradient, and the low–high and high–high aggregations were mainly distributed in Huaihua City and Xiangxi Tujia and Miao Autonomous Prefecture. Population density and gross domestic product were the main driving factors, while topography was the main ecological factor. This study could provide additional spatial information and theoretical guidance for ecosystem service management for sustainable development in western Hunan, China.

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Human activities influence the occupancy probability of mammalian carnivores in the Brazilian Caatinga

Cited by 46 publications

References 50 publications

Identifying conservation priorities in a defaunated tropical biodiversity hotspot

Identifying conservation priorities in a defaunated tropical biodiversity hotspot

ESTRESSE SALINO NO CRESCIMENTO INICIAL E METABOLISMO DE NITROGÊNIO EM PLANTAS DE ARROZ (Oryza sativa L.)

Ecosystem Service Response to Human Disturbance in the Yangtze River Economic Belt: A Case of Western Hunan, China

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